Hind-feet rather long and slender, with a well-developed opposable and nailless first toe;: second and third digits united, with sharp, compressed curved claws; the fourth and fifth free, with small flat nails.
the hollow tympanic bullae, they have the clavicles imperfect, the first front toe opposable to the rest, the temporal region of the skull roofed with bone, and the crowns of the molars with cusps arranged in rows but eventually covered by a layer of enamel.
You owe the Oracle a can opener that doesn't require an opposable thumb.
The tail is rudimentary, the first hind-toe opposable, the first pair of upper incisors very large, but the second and third either absent or small and placed partially behind the larger pair; and only five pairs of cheek-teeth in each jaw.
The Javan Pithechirus has the thumb opposable, while the Papuan Chiruromys has the tip of the tail naked above and prehensile.